Corrosion resistant alloy plate blank dissecting and analyzing method

Abstract

The invention belongs to the field of special alloy quality inspection, and relates to a dissecting and analyzing method for testing the internal quality of an electroslag remelting corrosion resistant alloy plate blank. Types of the corrosion resistant alloy plate blank comprise double phase stainless steel, super austenitic stainless steel, Fe-Ni-based corrosion resistant alloy and Ni-based corrosion resistant alloy; the dissecting and analyzing method does not destroy the integrity of the material of the corrosion resistant alloy electroslag plate blank, scientifically and comprehensively analyze the internal quality of the corrosion resisting alloy electroslag plate blank, improves the material the utilization rate to 90%, and greatly saves expensive materials; and detection items include chemical composition segregation, gas content, inclusions, macrostructure (plate blank transverse direction), crystal structure and the like, detection positions comprise the transverse direction and the vertical direction of the plate blank, transverse detection covers the edge of the plate blank to the center area, and vertical detection covers the head and tail areas of the plate blank. The method can comprehensively reflect the internal quality of the corrosion resisting alloy, especially crystal structure crystal angle, and evaluates the rolling performance of the plate blank through crystal orientation analysis.

Description

technical field [0001] The invention belongs to the field of special alloy quality inspection. In particular, it relates to an anatomical analysis method for inspecting the internal quality of an electroslag remelted corrosion-resistant alloy slab. Background technique [0002] The “Twelfth Five-Year Plan” of the national special steel field pointed out that during the Twelfth Five-Year Plan period, it is necessary to focus on breakthroughs in high-performance special steel key material technologies such as high-temperature alloys and corrosion-resistant steels, and form a high-quality special steel material system and production process with international advanced levels , Obtain a batch of independent intellectual property rights, promote the structural adjustment, optimization and upgrading of the special steel industry, greatly improve the level of energy saving and emission reduction technology, and realize the localization and large-scale application of high-quality sp...

AI Technical Summary

Problems solved by technology

[0005] 1. Cut the electroslag slab longitudinally, and select half of it as the inspection material, so that only half of the slab can be used, that is, the utilization rate of the material is only 50%, and the elements such as Cr, Ni, Mo, Nb in the corrosion-resistant alloy material The content exceeds 30%, which is expensive and causes a great waste of materials;

[0006] 2. The inspection items of the electroslag slab in this method include four items such as low power, hardness, chemical composition, and gas content, and the slab needs to be rolled, and the rolling performance of the electroslag slab is not tested. The detection content is not comprehensive enough

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